What are oxidising agents?

Explanation

### Step-by-Step Solution:

1. **Definition of Oxidizing Agents**:
- An oxidizing agent is a substance that facilitates oxidation in a chemical reaction. It does this by accepting electrons from another substance, which causes the other substance to be oxidized.

2. **Understanding Oxidation and Reduction**:
- Oxidation is defined as the addition of oxygen to a substance or the removal of hydrogen from it.
- Conversely, reduction is the removal of oxygen from a substance or the addition of hydrogen to it.
...